Edge-tool-tempering pot



(Model.)

C. DIXON.

EDGE TOLTEMPERING POT. No. 256,201.- Patenwd Apr.11,18 82.

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EZZMQ) A UNITED STATES PATENT OEEIcE.-

CHARLES E. DIXON, OF PITTSBURG, PENNSYLVANIA.

EoGE-TooL-TEMPERINePoT.

SPECIFICATION forming part of Letters Patent No. 256,201, dated April11, 1882.

To alt/whom it may concern:

Be 1t known that I, CHARLES E. DIXON, a

' citizen of the United States, residing at Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Tempering Pans or Pots for Tempering'Edge-Toois 5and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as.wiil enable others skilled in theart to which it appertains'to make and use the same, reference being hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

Figure l of my device is a side view, and Fig. 2 is a vertical sectionof the same. v

My invention is an improved tempering-pot for tempering edge-tools; andit consists of the following peculiar features: a wrought-ironeylindrcalshellcloselyinclosingthewrought-iron tempering-pot Within, andhaving around its upper end and welded thereon a wrought-iron ring orband, all of which, and their purposes and results, are hereinafter moreparticularly described, and illustrated by the accompanying drawings, inwhich the same letters designate identical parts in the differentfigures.

A represents a tempering-pot, of the usual form and size, constructed ofwrought or forged iron, which not only makes said pot, in comparisonwith its size, of much less weight, but much tougher in substance, andless liable to crack or split While enduring high degrees 0f temperaturethan one constructed of cast-iron in the usual manner. Besides theabove, in order to still further protect the said pot A from warpage andthe disintegratingeect of the furnace-fire, it is tightly inclosed,about three-fourths of its height or length, within an outer cylindricalpot or shell, B, made also of wrought or forged iron. The purposedresults ot' this kind of covering-shell are, first, that the inner ortempering pot, A, is completely protected from immediate contact withthe tire,

Application inea February 2s, lese. (Moden and consequently far outlaststhe usual ones; second, that when the uter pot or shell, B, is nearlyburned or worn away theremaining portions can be removed and anothersimilar shellcover be fastened around, as aforesaid, to supply itsplace, thus adding to the lasting quality ofthe inner pot; and, finally,that great beneticial effect is imparted to the tempering contents oftheinner pot by the said double shells l or pots A and B beingconstructed of wroughtirn-to Wit, an evenly-concentrating heat permeatesthe said tempering-fluids Within the inner pot, resulting in the morethorough and even distribution of the tempering qualities of said fluidsto the metallic substance of the tool undergoing process, as shown bythe quick and certain indication of the designative color evenly spreadover the surt'ace of the tempered metal.

c represents the aforesaid Wrought-iron ring or band,which is tightlyforged around the upper end of the pot A. -Tlie run of the fibers ot'said ring being across those of thc pot A, there result an `even andcounterbaiancing expansion and contraction of the metal of said potundergoing the effects of changing degrees of heat, thus preventing anysplitting of the sides or edges of the tempering-pot.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, 1s

The wrought-iron tempering-pot A, tightly inelosed within thewrought-iron protectingshell B, and having the Wrought-iron band ctightly forged around its-upper'nd, all constructed and combined as andfor the purposes herein specified.

In testimony whereof I affix my signature in presence ot' two Witnesses.

OHAS. E. DIXON.

Witnesses:

Roer. HAYsMITn, DAVID LARNED.

